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patriot [66]
3 years ago
15

What is the simplest form for the fractions 12/30,12/20 and 21/35

Mathematics
1 answer:
Yuki888 [10]3 years ago
6 0
Simplest form of:
12/30=2/5
12/20=3/5
21/35=3/5
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A+(−1.3)=−4.5 i dont know the answer i need help plsss
DochEvi [55]
A+(-1.3)=-4.5
Add 1.3 to both sides of the equation
a=-3.2
5 0
2 years ago
A group of students at a high school took a standardized test. The number of students who passed or failed the exam is broken do
Anuta_ua [19.1K]

Answer:

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

Step-by-step explanation:

Independent events:

Two events, A and B are independent, if:

P(A \cap B) = P(A)P(B)

Probability of male:

58 + 14 = 72 males out of 58 + 14 + 98 + 11 = 181

So

P(male) = 72/181 = 0.3978

Probability of failling:

14 + 11 = 25 students fail out of 181. So

P(fail) = 28/181 = 0.1381

Multiplitication of male and failling:

0.3978*0.1381 = 0.0549

Probability of being male and failing:

14 out of 181. So

14/181 = 0.0773

Different probabilities, so not independent.

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

5 0
3 years ago
The slope of a line is 1, and the y-intercept is -1. What is the equation of the line written in slope-intercept form?
Drupady [299]

Answer:

y = x - 1

Step-by-step explanation:

y=mx+b

b= y-intercept

m= slope  

7 0
2 years ago
Ivan will rent a car for the weekend. He can choose one of two plans. The first plan has no initial fee, but costs $0.90 per mil
borishaifa [10]

Answer:

$337.50

Step-by-step explanation:

The computation of the number of miles need to drive for determining the same cost is given below:

Let us assume the miles be x

So for the first plan, the equation is

= $0.90x

And for the second plan, the equation is

= $75 + $0.70x

Now equate this

0.90x = $75 + 0.70x

0.90x - 0.70x = $75

0.20x = $75

x = $75 ÷ 0.20

= 375 miles

Now the same cost would be

For plan A and plan B

0.90x = $75 + 0.70x

0.90(375) = $75 + 0.70(375)

$337.5 = $75 + $262.50

$337.50 = $337.50

7 0
2 years ago
PLEASE HELP QUICKLY 20 POINTS!!
Ymorist [56]

<u>Part A and its work</u>

There is an ratio relationship between the hours and the amount paid. So for every hour you get paid 15$, You can figure this out by dividing the table for each amount of money earned by the time.45/3=15

75/5=15

120/8=15

150/10=15

<u>Part B and Its work</u>

Carl earns more money then louis because louis only makes 12$ per hour, It can even be shown in the chart below

Money||Money Earned

3         ||  36

5         ||  60

8         ||   96

10       ||    120

<u>Part C</u>

Make A coordinate grid, the  X axis as time and the Y axis as money earned and plot the following coordiates (0,0) (1,15) (2,30)

7 0
3 years ago
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